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Copyright Notice:
No part of this installation guide may be reproduced, transcribed, transmitted, or translated in any language, in any form or by any means, except duplication of documentation by the purchaser for backup purpose, without written consent of ASRock Inc.
Products and corporate names appearing in this guide may or may not be registered
trademarks or copyrights of their respectivecompanies, and are used only for identification or explanation and to the owners’ benefit, without intent to infringe.

Disclaimer:
Specifications and information contained in this guide are furnished for informational
use only and subject to change without notice, and should not be constructed as a
commitment by ASRock. ASRock assumes no responsibility for any errors or omissions
that mayappear in this guide.
With respect to the contents of this guide, ASRock does not provide warranty of any kind,
either expressed or implied, including but not limited to the implied warranties or
conditions of merchantability or fitness for a particular purpose. In no event shall
ASRock, its directors, officers, employees, or agents be liable for any indirect, special,
incidental, orconsequential damages (including damages for loss of profits, loss of
business, loss of data, interruption of business and the like), even if ASRock has been
advised of the possibility of such damages arising from any defect or error in the guide
or product.

This device complies with Part 15 of the FCC Rules. Operation is subject to the
following two conditions:
(1) this device may not causeharmful interference, and
(2) this device must accept any interference received, including interference that
may cause undesired operation.
CALIFORNIA, USA ONLY
The Lithium battery adopted on this motherboard contains Perchlorate, a toxic
substance controlled in Perchlorate Best Management Practices (BMP) regulations

English

passed by the California Legislature. When you discard the Lithiumbattery in
California, USA, please follow the related regulations in advance.
“Perchlorate Material-special handling may apply, see
www.dtsc.ca.gov/hazardouswaste/perchlorate”
ASRock Website: http://www.asrock.com

Published May 2010
Copyright©2010 ASRock INC. All rights reserved.

1
ASRock 790GX Pro M otherboard

Motherboard Layout

1
2
3
4
5
6
7

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8
9
10
1112
13
14
15
16
17
18
19
20

PS2_USB_PW1 Jumper
CPU Fan Connector (CPU_FAN1)
ATX 12V Power Connector (ATX12V1)
AM3 CPU Socket
CPU Heatsink Retention Module
2 x 240-pin DDR3 DIMM Slots
(Dual Channel A: DDR3_A1, DDR3_B1; Blue)
2 x 240-pin DDR3 DIMM Slots
(Dual Channel B: DDR3_A2, DDR3_B2; White)
ATX Power Connector (ATXPWR1)
Northbridge Fan Connector (NB_FAN1)
Primary IDEConnector (IDE1, Blue)
Clear CMOS Jumper (CLRCMOS1)
SPI Flash Memory (8Mb)
Southbridge Controller
System Panel Header (PANEL1, White)
Chassis Fan Connector (CHA_FAN2)
Chassis Fan Connector (CHA_FAN1)
Chassis Speaker Header (SPEAKER 1, White)
SATAII Connector (SATAII_2 (PORT 1), Blue)
SATAII Connector (SATAII_1 (PORT 0), Blue)
SATAII Connector (SATAII_4 (PORT 3), Blue)

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22
23
24
25
2627
28
29
30
31
32
33
34
35
36
37
38
39
40

SATAII Connector (SATAII_3 (PORT 2), Blue)
Power LED Header (PLED1)
SATAII Connector (SATAII_5 (PORT 4), Blue)
USB_PW3 Jumper
USB 2.0 Header (USB6_7, Blue)
USB 2.0 Header (USB8_9, Blue)
USB 2.0 Header (USB10_11, Blue)
Infrared Module Header (IR1)
Floppy Connector (FLOPPY1)
Serial Port Connector (COM1)
Front Panel Audio Header(HD_AUDIO1, White)
Internal Audio Connector: CD1 (Black)
HDMI_SPDIF Header
(HDMI_SPDIF1, White)
PCI Slots (PCI1-3)
PCI Express 2.0 x1 Slot (PCIE3; White)
PCI Express 2.0 x16 Slot (PCIE2; Blue)
PCI Express 2.0 x1 Slot (PCIE1; White)
Northbridge Controller
Power Fan Connector (PWR_FAN1)
USB_PW2 Jumper

2
ASRock 790GX Pro M otherboard

Panel
I/O Panel

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3
*4
5
6
7
8

USB...